VIEW ARTICLE

Ecology and Epidemiology

Evaluation of a New York Ascospore Maturity Model for Venturia inaequalis in North Carolina. T. B. Sutton, Assistant professor, Department of Plant Pathology, North Carolina State University, Raleigh 27650; J. R. James(2), and J. F. Nardacci(3). (2)(3)Graduate research assistant, and research assistant, Department of Plant Pathology, North Carolina State University, Raleigh 27650. Phytopathology 71:1030-1032. Accepted for publication 23 January 1981. Copyright 1981 The American Phytopathological Society. DOI: 10.1094/Phyto-71-1030.

An apple scab ascospore maturity model developed in New York did not satisfactorily predict maturity of Venturia inaequalis ascospores during four seasons in North Carolina. The model predicted mature ascospores in the winter much earlier than they occurred in nature. The failure of the model under NC conditions appears to be due to certain aspects of the biology of V. inaequalis that were not accounted for by the model and were not noticed because of the environmental conditions in the Geneva, NY, area.